Dr. Ram Mohan M
Chief Scientist , Geochemistry
Specialization
Crustal evolution and Metallogeny
Research Area
Dr. M. Ram Mohan has obtained Master’s and Doctoral degrees from the Osmania University, Hyderabad. His professional research career started working in a research group in NGRI to understand the gold potential and depositional environment in banded iron formations (BIFs) in various Archean greenstone belts of the Dharwar Craton.
Dr. Mohan’s research interests mainly revolve around understanding the Archean crustal growth processes through the application of field and laboratory methods. He extensively uses mineral chemistry, whole rock geochemistry, apart from radiogenic isotopes, U-Pb zircon geochronology to study the Archean tectonics. As a member of various research projects executed in NGRI, Dr. Mohan has worked in different cratonic blocks of India.
Currently he is occupied as the Chief Scientist in Geochemistry Division. He has been the reviewer for various reputed journals like Precambrian Research, Lithos, Gondwana Research, Journal of Asian Earth Sciences, Lithosphere, Geological Magazine, JESS etc..
He is conferred with the Krishnan Gold Medal for the year 2012 by Indian Geophysical Union, and elected Fellow of the Telangana Academy of Sciences. He is the recipient of BOYSCAST Post-Doctoral Fellowship (2007-08) and the CSIR-Raman Research Fellowship (2015).
Ongoing Research Projects
- Petrology, geochemistry of the mafic - ultramafic and alkaline rocks of Dharwar Craton, Bundelkhand Craton; Central India and Deccan flood basalt province and mineralisation through space and time (MLP-7015-28 (MRM))
- Development of new analytical protocols, and the analysis of NGCM samples (SSP-858-28 (MRM))
- Metallogenic Processes in selective Precambrian terranes of India (FBR Project, CSIR funded)
- Chronostratigraphic and Provenance analysis from the sub-surface samples of exploratroy wells of Oil India Limited (OIL funded)
Honors & Awards
- Fellow, Telangana Academy of Sciences
- CSIR-Raman Research Fellowship, 2015
- IGU-Krishnan Gold Medal, 2012
- BOYSCAST Post-Doctoral Fellowship, 2007
Publications
Panicker A G, Ram Mohan, M and Ravi Shankar (2024) Transition from vertical to horizontal tectonic regime during the Paleoarchean-Mesoarchean: Evidence from mafic-ultramafic rocks of the Holenarsipur greenstone belt, Western Dharwar Craton, Southern India. Precambrian Research,
https://doi.org/10.1016/j.precamres.2024.107492
Ajay Dev Asokan, Ram Mohan, M, Mahapatro, S N, Ravi Shankar and Rasheed, K (2023) Petrogenesis of metavolcanics and detrital zircon geochronology of the Mesoarchean western Iron Ore Group supracrustals, Singhbhum Craton (India): Evidence for an intracontinental extension setting. Precambrian Research, 396, 107157, https://doi.org/10.1016/j.precamres.2023.107157
AG Panicker, B Sai Kiran, B Vikram Raju, M Ram Mohan* (2022) Characterisation of serpentine polymorphs from the Holenarsipur Greenstone Belt, Western Dharwar Craton: Implications for multi-stage serpentinization. Journal of Earth System Science, v. 131, pp. 1-13.
Ajay Dev Asokan, Mahapatro, S.N., Ram Mohan, M*, Rocholl, A., Wiedenbeck, M. and Nanda, J.K (2021) Paleoarchean evolution of the Singhbhum Craton, eastern India: New constraints from geochemistry and geochronology of granitoids of Bonai and Champua area. Precambrian Research, 366, 106429. org/10.1016/j.precamres.2021.106429
Panicker, A G, Ram Mohan, M*, Upadhyay D, Raju BV, Chauhan H and NVC Rao (2021) U-Pb zircon age, geochemistry and petrogenesis of Mesoarchean anorthositic rocks from the Holenarsipur greenstone belt, Western Dharwar Craton: Implications for accretionary tectonics in southern India. Lithos, org/10.1016/j.lithos.2021.106268
Ajay Dev Asokan, Elangovan, R., Vishwakarma, N, Hari, KR and Ram Mohan, M* (2020) Petrogenesis of the Kanker granites from the Bastar Craton: Implications for the crustal growth and evolution during the Archean-Proterozoic transition. Frontiers in Earth Science 8:212, doi: 10.3389/feart.2020.00212
Ajay Dev Asokan, Kumar Krishna, Ram Mohan, M* (2020) Petrogenesis of the Palaeoarchean Keonjhar Granite, Singhbhum Craton, India: product of crustal reworking or subduction? Current Science, v. 118, pp. 910-919.
Elangovan, R., Ajay Dev Asokan, Dinesh Pandit and Ram Mohan, M* (2020) Magma chamber processes and geodynamic implications of the Pithora pluton, Bastar Craton, Central India. Geological Journal, v. 55, 2738-2759. https://doi.org/10.1002/gj.3534
Ram Mohan, M*., Ajay Dev Asokan and Simon Wilde (2020) Crustal Growth of Eastern Dharwar Craton: A Neoarchean collisional orogeny? Geological Society London Special Publication, v. 489, pp. 51-77. https://doi.org/10.1144/SP489-2019-108 .
B. Krapež, D.S. Sarma, M.R. Mohan, N.J. McNaughton, B. Rasmussen, S.A. Wilde (2020) Tectonostratigraphy of the Late Archean Dharwar Supergroup, Dharwar Craton, India: defining a tectonic history from spatially linked but temporally distinct intracontinental and arc-related basins. Earth Science Reviews. https://doi.org/10.1016/j.earscirev.2019.102966 .
Soumya Shukla and Ram Mohan, M* (2019) Magma mixing in Neoarchean granite from Nalgonda region, Eastern Dharwar Craton, India: Morphological, mineralogical and geochemical evidences. Journal of Earth System Sciences, v. 28, pp. 71-98.
Elangovan, R, Kumar Krishna, Vishwakarma, N, Hari, K and Ram Mohan, M* (2017) Interaction of coeval felsic and mafic magmas from the Kanker granite, Pithora region, Bastar Craton, Central India. Journal of Earth System Sciences, v. 126, pp. 92-07.
Ram Mohan, M*, Shaji, E, Satyanarayanan, M, Santosh, M, Tsunogae, T, Yang, Q-Y, and Dhanil Dev, S.G (2016) Imprints of Marion hotspot in southern India: Evidence from Ezhimala igneous complex. Journal of Asian Earth Sciences, v. 121, pp. 56-71.
Santosh, M, Yang, Q-Y, Shaji, E, Ram Mohan, M, Tsunogae, T, and Satyanarayanan, M (2016) Oldest rocks from Peninsular India: Evidence for Hadean to Neoarchean crustal evolution. Gondwana Research, 29, pp. 105-135.
Santosh, M, Yang, Q-Y, Shaji, E, Tsunogae, T, Ram Mohan, M and Satyanarayanan, M (2015) An exotic Mesoarchean microcontinent: The Coorg Block, southern India. Gondwana Research, v. 27, pp. 165-195.
Ram Mohan, M*, Srinivasa Sarma, D, McNaughton, N, Fletcher, I. R, Wilde, S. A, Siddiqui, M. A, Rasmussen, B., Krapez, B, Gregory, C and Kamo, S. L (2014) SHRIMP zircon and titanite U-Pb ages, Lu-Hf isotope signatures and geochemical constraints for ~2.56 Ga granitic magmatism in western Dharwar Craton, southern India: Evidence for short-lived Neoarchean crustal growth? Precambrian Research, v. 243, pp. 197-220.
Ram Mohan, M*, Satyanarayanan, M, Santosh, M, Paul, J. Sylvester, Tubrett, M and Lam, R (2013) Neoarchean suprasubduction zone arc magmatism in southern India: Geochemistry, zircon U-Pb geochronology and Hf isotopes of the Sittampundi Anorthosite Complex. Gondwana Research, v. 23, pp. 539-557.
Ram Mohan, M*, Piercey, S.J, Kamber, B.S and Sarma, D.S (2013) Subduction related tectonic evolution of the Late Archean Eastern Dharwar Craton, southern India: New Geochemical and Isotopic Constraints, Precambrian Research, v. 227, pp. 204-226.
Ram Mohan, M*, Singh, S.P, Santosh, M, Siddiqui, M.A and Balaram, V (2012) TTG suite from the Bundelkhand Craton, Central India: Geochemistry, petrogenesis and implications for Archean crustal evolution. Journal of Asian Earth Sciences, v. 58, pp. 38-50.
Sarma, D.S, McNaughton, N.J, Belusova, E, Ram Mohan, M, Fletcher, I.R (2012) U–Pb ages and Hf-isotope systematics of detrital zircons from the Gadag greenstone belt: Implications for the Achaean crustal growth processes in the western Dharwar Craton, India. Gondwana Research, v. 22, pp. 843-854.
Sarma, D.S, Fletcher, I.R, Rasmussen, B, McNaughton, N.J, Ram Mohan, M and Groves, D.I (2011) Archean gold mineralization synchronous with late cratonisation of the Western Dharwar Craton, India: 2.52 Ga ages of hydrothermal monazite and xenotime in gold deposits. Mineralium Deposita, v. 46, pp. 273-288.
Sarma, D. S, Neal McNaughton, Fletcher, I. R, Groves, D. I, Ram Mohan, M and Balaram, V (2008) The Timing of gold mineralization of Hutti gold deposit, Dharwar Craton, South India. Economic Geology, v. 103, pp. 1715-1727.
Ram Mohan, M*, Kamber, B. S and Piercey, S.J (2008) Boron and arsenic in highly evolved Archean magmas: Implications for Archean subduction zone processes. Earth and Planetary Science Letters, v. 274, pp. 479-488.
Ram Mohan, M*, Sarma, D. S, Rajasekhar, V.B, Charan, S.N, Balaram, V and Talat Ahmad (2008) Geochemistry and Petrogenesis of amphibolites from the southern part of Gadag greenstone belt, Karnataka. Journal of the Geological Society of India, v.72, pp. 484-494.
Naqvi, S.M, Sarma, D. S, Sawkar, R. H, Ram Mohan, M and Rana Prathap, J. G (2008) Role of adakitic magmatism and subduction in gold endowment of Dharwar Neoarchaean greenstone belts, India. Journal of the Geological Society of India, v. 71, pp. 875-888.
Sarma, D. S, Janet Muhling, Ram Mohan, M and Neal McNaughton (2008) Occurrence of Hydrothermal Phosphate Minerals in the Gold Mineralized Zones at Hutti Gold Deposit, Karnataka, South India. Journal of the Geological Society of India, v. 71, pp. 223-228.
Manikyamba, C, Naqvi, S.M, Subba Rao, D.V, Ram Mohan, M, Tarun C. Khanna, Rao, T.G and Reddy, G.L.N (2005) Boninites from the Neoarchaean Gadwal Greenstone belt, Eastern Dharwar Craton, India: implications for Archaean subduction processes. Earth and Planetary Science Letters, v. 230, pp. 65– 83.
Manikyamba, C, Robert Kerrich, Naqvi, S.M. and Ram Mohan, M (2004) Geochemical systematics of tholeiitic basalts from the 2.7 Ga Ramagiri-Hungund greenstone belt, Dharwar Craton: An intraoceanic arc. Precambrian Research, v. 134, pp.21-39.
Ram Mohan, M and Prasad, PSR (2002) FTIR Investigations on Fluid Interactions in Mesothermal Quartz-Gold Veins of Penakacherla Schist Belt, India, Current Science, v. 83, pp.755-760.
Books
Research Scholars
Md. Qasim (AcSIR) August 2019
Amresh Bharati (AcSIR) August 2022
Anu Joseph (AcSIR) January 2024
Deepak Bisen (AcSIR) August 2024
Educational Qualification
PhD
Proffessional Experience
10/ 2021 -- Till date Chief Scientist, CSIR-NGRI
10/ 2015 -- 10/2021 Senior Principal Scientist, CSIR-NGRI
10/ 2010 -- 09/2015 Principal Scientist, CSIR-NGRI
10/ 2006 -- 09/ 2010 Senior Scientist, CSIR-NGRI
10/ 2002 -- 09/ 2006 Scientist-C, CSIR-NGRI
10/ 1999 -- 09/2002 Scientist-B, CSIR-NGRI
Proffessional Affiliations
Fellow, Telangana Academy of Sciences
Fellow, Geological Society of India
Fellow, Indian Society of Applied Geochemists
Fellow, Indian Geophysical Union